I think you should apply in December. Because november 2017 applicants are now receiving their landing interviews. So, all in all it could take a year easily.I have similar issue, as I am currently on a post graduate open work permit that expires May 2019. I didn't apply for OWP with my PR, and I am now thinking I may not receive AIP in time. How can I do it by paper? I also read that the rule may change soon. Should I apply in December, 5 month in advance?
And which rules might change?